A medical device could meet every regulatory and technical benchmark, but still struggle once it reaches the final test in its path to adoption: everyday clinical use.
That’s because real-world care introduces variables that controlled development phases can’t replicate. Time pressure, competing priorities and human behavior all influence how a device is actually used, which ultimately determines whether it becomes part of routine practice and, ultimately, improves patient care.
If a device overlooks those realities, inconsistency and risk follow. Human factors engineering (HFE) exists to close these gaps early, translating clinical complexities into context-aware designs equipped for stronger adoption.
What Is Human Factors Engineering? Thinking Beyond User Error
It’s easy to attribute engineering problems to haphazard training or user mistakes. But in many cases, issues stem from interactions between a device, its users and the environment.
Once a product reaches real clinical settings, several unpredictable external factors influence outcomes in ways that may not show up in development. Human factors engineering pushes teams to evaluate frequently unasked questions like:
- What happens when users are under pressure?
- How does performance vary across experience levels?
- Where do design decisions introduce or reduce friction?
Without HFE driving examination, designs will reflect ideal conditions rather than practical use. That disconnect can surface later on as late-stage reworks or adoption challenges.
To address this, teams in discovery should focus on understanding the full scope of the problem first — and more importantly, the people most affected by it.
The Two Often-Overlooked Perspectives That Shape Adoption
Clinicians and patients have an oversized impact on whether a device is embraced or avoided, yet both are traditionally underrepresented early in medical device design and development.
Clinicians: The Source of Workarounds
When a device disrupts routine care or adds inconvenient steps, clinicians must adapt with on-the-fly solutions that keep care moving yet simultaneously introduce variability. Over time, those workarounds can become standards that stray far from original design intent.
In practice: Earlier nasal irrigation methods illustrate this concept well. Clinicians spent decades modifying syringes in creative ways — poking holes or attaching makeshift components — to manage splashback. Those workarounds sufficed, but each variation brought inconsistencies.
Eventually, all it took was one clinician noticing those repeated patterns and translating them into a more standardized product, extracting a sound solution from underlying frontline insights.
Patients: The Deciding Factor in Participation
As end users, patients tend to come last in the device development conversation, despite being the primary decider in sustained adoption.
But when the patient experience involves discomfort, behavior changes. People will hesitate to use a device or avoid it entirely if it’s too invasive or unpleasant, stalling adoption before it can even begin.
In practice: This dynamic became apparent with nasal swab sampling during COVID-19. The process left a strong negative impression on the public, and understandably so — ramming a foreign object into the nasal cavity was painful and anxiety-inducing for many.
The reputation stuck. Today, the Journal of the American Medical Association Network reports a third of Americans would refuse testing for respiratory symptoms, opting instead to simply wait it out while potentially accelerating viral spread.
Keeping end-user experiences top of mind not only supports device design, but also broader outcomes like stronger engagement, better care quality and overall outbreak response.
How End-User Insights Enhance Medical Device Design & Development
With a patient-centered mindset and sharp focus on efficiency, clinicians offer context that internal assumptions can’t match. They may not be the ones prescribing technical solutions, but they add value in identifying and articulating the most significant pain points of daily practice. Their input can:
- Surface real workflow challenges
- Highlight constraints that affect adoption
- Reveal patterns of resistance among end users
Through this collaboration, engineering ownership stays intact while clinician insight keeps designs tied to real conditions. Structured collaboration, timed alongside development milestones, helps integrate this perspective without slowing progress.
Practical Steps to Integrate Human Factors Engineering & Reduce Risk
Gaps in user understanding often emerge later as compliance issues, inefficiencies or inconsistent outcomes. Several practical steps can minimize that risk:
- Map the full user journey, including upstream and downstream interactions
- Build user personas that reflect real variability across skill levels and environments
- Run iterative usability testing with a range of representative users
- Document design trade-offs and rationale throughout development, explicitly noting why certain features advanced and others did not.
HFE-Driven Medical Device Design, Proven in Practice Through MicroWash
Regulatory and technical milestones signal progress — not necessarily long-term success. Adoption is the only metric that truly reflects whether a device fits into daily workflows, meets end-user expectations and becomes the standard of care.
HFE provides the right structure to achieve that alignment, and MicroWash is a prime example of its principles in action.
The nasal lavage specimen collection device, MicroWash, emerged from a simple COVID-era question: Is nasal swab sampling the best we can do? Patients and clinicians alike dreaded the process, and both groups faced serious safety risks.
Dozens of clinician-led conversations, design iterations and patient personas later; MicroWash became the new gold-standard in swab-free collection for respiratory illnesses. Designed around HFE from the start, it delivers greater:
- Comfort: Patient pain ratings average 0.3/10, versus swabs at 8/10 — despite reaching far more surface area within the nasal cavity to capture more sensitive, complete samples.
- Safety: Gentle saline rinse replaces the probing swab to eliminate injuries like retained foreign bodies and CSF leaks.
- Simplicity: With less subjectivity in administration, 100% of people who performed the MicroWash reported it was easy, compared to only 25% with nasal swabs.
- Efficiency: Prioritizing end users never came at the expense of labs. MicroWash integrates with existing PCR processes, requires minimal training and helps increase throughput.
Discover more advantages of MicroWash over nasal swabs and contact our medical experts to equip your organization with a sampling solution built for today’s end users and clinical settings.
